/*
 * Copyright 2007-2008, www.jsemantic.org, www.adolfoestevez.com,
 * http://semanticj2ee.blogspot.com/ 
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jsemantic.core.knowledgefactory;

import java.util.ArrayList;
import java.util.Collection;

import org.jsemantic.core.knowledgedb.KnowledgeDB;
import org.jsemantic.core.knowledgedb.KnowledgeDBImpl;
import org.jsemantic.core.knowledgedbfactory.KnowledgeDBFactory;

/**
 * A factory for creating MockKnowledgeDB objects.
 */
public class MockKnowledgeDBFactory implements KnowledgeDBFactory {

	/** The db. */
	private KnowledgeDB db = null;

	/**
	 * Instantiates a new mock knowledge db factory.
	 */
	public MockKnowledgeDBFactory() {
	}

	/* (non-Javadoc)
	 * @see org.jsemantic.core.knowledgedbfactory.KnowledgeDBFactory#getInstance()
	 */
	public KnowledgeDB getInstance() {
		Collection knowledge = loadObjects();
		db = new KnowledgeDBImpl(knowledge);
		return db;
	}

	/**
	 * Load objects.
	 * 
	 * @return the collection
	 */
	private Collection loadObjects() {
		Collection knowledge = new ArrayList();
		String object1 = "Knowledge Object 1";
		String object2 = "Knowledge Object 2";
		String object3 = "Knowledge Object 3";
		String object4 = "Knowledge Object 4";

		knowledge.add(object1);
		knowledge.add(object2);
		knowledge.add(object3);
		knowledge.add(object4);

		return knowledge;
	}

	/**
	 * Dispose.
	 */
	public void dispose() {
		if (this.db != null) {
			db.dispose();
		}

	}
}
